The drone cannon Ex-B, is a unique weapon in the Fallout 3 add-on Mothership Zeta, carried by the experimental weapons drone.
Contents
Characteristics
Drone canon Ex-B is an experimental version of the standard drone canon used by guardian drones. The Ex-B fires an energy ball with an arcing trajectory, and the fired projectile is capable of ricocheting off of solid objects once.
Similar to the drone cannon it is ineffective in V.A.T.S. because the trajectory and ability to ricochet is not taken into account. Instead the projectile will be fired in straight line, which typically will leave projectiles several meters away from their intended targets.
Durability
The drone cannon Ex-B can successfully fire about 417 times from full condition before breaking; the same amount as a normal drone cannon.
Variants
- Drone cannon - the common variant.
Comparison
| Legend | ||||
|---|---|---|---|---|
 | - Weapon name (melee or unarmed) |  | - Attacks in V.A.T.S. | |
 | - Weapon name (gun, energy or explosive) |  | - Action point cost | |
 | - Damage per attack (damage per projectile) |  | - Damage per action point | |
 | - Damage per second |  | - Weapon spread | |
 | - Area of effect damage |  | - Magazine capacity (shots per reload) | |
 | - Effect damage & duration |  | - Durability (number of attacks before breaking) | |
 | - Bonus effects |  | - Weight | |
 | - Attacks per second |  | - Value in caps | |
 | - Critical chance % multiplier |  | - Value to weight ratio | |
 | - Critical damage |  | - Skill required | |
 | - Critical effect damage & duration |  | - Strength required | |
 | - With all mods attached | |||
| | | | | | | | | | | | | | | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Drone cannon | 40 | 466.7 | 100 | Timed detonation | 3.33 | x1 | 50 | 30 | 4.7 | 0.5 | 1 | 417 | 18 | 1999 | 111.1 |
| Drone cannon Ex-B | 40 | 466.7 | 100 | Impact detonation | 3.33 | x1 | 50 | 30 | 4.7 | 0.5 | 1 | 417 | 18 | 1999 | 111.1 |
Location
In the southern area of the weapons lab, there is a room where one can use a nearby button to spawn-in brahmin for the drones to kill (not the room next to the shooting range, but the room next to the weapons cache). Enter the room and destroy the drone for the weapon. There is also a second one in the same room that is automatically activated when the first is destroyed.
Bugs
When shot, the projectile will occasionally pass through walls or the floor and do nothing. [verified]- In some accounts, when shot, the projectile will just disappear as soon as it hits the target, damaging it but not exploding. [verified]
- When shot into deep water, the projectile will disappear, and then reappear and seemingly "float" in place on the surface without exploding. Projectiles fired onto the floating projectile will attach and stack, also without exploding. [verified]
- In V.A.T.S. mode, the Ex-B seems to aim like a normal drone cannon, landing short of the enemy as if expecting the projectile to bounce. [verified]
- On some occasions, the cannon will fire the projectile but will bounce off surfaces and not explode. [verified]
Sounds
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Gallery
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